Syed Imam was arrested following a report from the security team at Canary Wharf in March.
They had witnessed Imam attempting to rape a woman in the underpass near the train station and stopped him from fleeing.
Police say the victim had no recollection of what had happened.
But they used evidence secured through CCTV to arrest, investigate and charge Imam.
Detective Constable Madeleine Powell, who worked on this case stated:
“This case shows the important role everyone has to play in tackling violence against women and girls. If security staff at Canary Wharf had not bravely intervened, this violent offender could still be walking our streets, and the victim may have suffered even more harm than she already has.
“Everyone has a part to play in the joint action needed to protect women and girls and report concerning behaviour when they see it – you will be listened to and we will take action.
“I am proud of our officers who worked at an incredible pace to arrest Imam and present a compelling case, helping us to get justice for the victim and protect the public”
Despite the victim having no recollection of what had occurred, the evidence secured through CCTV and fast-paced investigative work allowed the suspect to be interviewed, charged and remanded within 24 hours.
